If it has got four legs and it is not a chair, if it has got two wings and it flies but is not an aeroplane, and if it swims and it is not a submarine, the Cantonese will eat it. - Philip, Duke of Edinburgh
It's strange, isn't it. You stand in the middle of a library and go 'aaaaagghhhh' and everyone just stares at you. But you do the same thing on an aeroplane, and everyone joins in. - Tommy Cooper